Co‑products and By‑products > MRP for Co-products/By-products > Approving Planned Work Orders
  
Approving Planned Work Orders
To approve planned work orders, use Planned Work Order Approval (23.10). Specify base processes by entering a BOM/Formula code range. This program changes the status on all orders in a joint set from Planned to Firm. The joint set is not updated based on effectivity dates for the co‑product/by-product structure (as is done when using Work Order Maintenance or Multiple Work Order Status Change), and work order detail is not re-created.
When a planned purchase order is approved, the system creates a regular firm planned work order, even if the item has a BOM/Formula code for a base process. If an MRP-planned order is originally purchased, MRP does not create a joint order set when it is approved as a work order.